MARCAS A UTILIZAR SOBRE LOS APARATOS. GENERALIDADES E INDICE
GRAPHICAL SYMBOLS FOR USE ON EQUIPMENT
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CTN 200 - Basic electrical standards
IEC 417-A:1974 (Identical)
IEC 417-B:1975 (Identical)
IEC 417-C:1977 (Identical)
IEC 417-D:1978 (Identical)
IEC 417-E:1980 (Identical)
IEC 417-F:1982 (Identical)
IEC 60417:1973 (Identical)
It is cancelled by: UNE 20557:1993
